Results 61 to 70 of about 1,885,983 (159)

A Comprehensive Survey on Ambient Backscatter Communications Toward Zero-Energy Devices and Networks

IEEE Open Journal of the Communications Society
The future of wireless communications and the beyond fifth generation (B5G) and sixth generation (6G) standards are expected to constitute technologies that are self-sufficient in terms of energy requirements, without compromising on key performance ...
Ashwini H. Raghavendra, Sanjeev Gurugopinath, Sami Muhaidat   +2 more
doaj   +1 more source

ESA Swarm Satellites Plasma Density Products: Comparison and Validation Against Incoherent Scatter Radars Observations

Space Weather, Volume 24, Issue 8, August 2026.
Abstract The European Space Agency's Swarm mission has provided over a decade of continuous in situ measurements of the topside ionospheric plasma. With the release of various official plasma density products and the development of several calibration methods, selecting the most reliable data set has become an important issue for the scientific ...
Alessio Pignalberi, Artem Smirnov, Chao Xiong, Vladimir Truhlik, Roberta Forte, Michael Pezzopane, Vincenzo Ventriglia, Luca Spogli, Lucilla Alfonsi   +8 more
wiley   +1 more source

Decision Fusion Rules in Ambient Backscatter Wireless Sensor Networks

, 2019
Ambient backscatter (AmBC) communications cap-italize on ambient radio-frequency (RF) signals to enable communications among ultra-low-power devices, thus representing a promising cost-effective solution for wireless sensor networks in the Internet of ...
Antonio Pescape, Ciuonzo D., Verde F., Giacinto Gelli, Gelli G., Francesco Verde, Pescape A., Domenico Ciuonzo   +7 more
core   +1 more source

On the Performance of Secured Ambient Backscatter Communications to Protect Digital Content and Copyrights

IEEE Access
Ambient backscatter communications (AmBC) have emerged as a promising solution for sustainable and energy-efficient wireless networks. When integrated with physical layer security (PLS), AmBC systems offer intrinsic protection against unauthorized access,
Tan N. Nguyen, Hye-Young Kim, Phuong T. Tran, Bui Vu Minh, Byung-Seo Kim, Lam-Thanh Tu, Miroslav Voznak   +6 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Multi-Antenna Receiver for Ambient Backscatter Communication Systems

, 2018
Consider an ambient modulated backscatter communication (AmBCC) system adopting binary phase shift keying modulation that the receiver is to decode the backscatter device induced message without knowledge of the channel state information, the statistical
Elmossallamy, Mohamed, Pan, Miao, Zhu Han, Duan, Ruifeng, Mohamed ElMossallamy, Ruifeng Duan, Han, Zhu, Riku Jantti, Miao Pan, Jantti, Riku   +9 more
core   +1 more source

Intra-Symbol Differential Amplitude Shift Keying-Aided Blind Detector for Ambient Backscatter Communication Systems

IEEE Open Journal of the Communications Society
Ambient backscatter communications (AmBC) are a promising technology for addressing the energy consumption challenge in wireless communications through the reflection or absorption of surrounding radio frequency (RF) signals.
Shuaijun Ma, Peng Wei, Sa Xiao, Jianquan Wang, Wanbin Tang, Wei Xiang   +5 more
doaj   +1 more source

Color Center Formation in Silicon‐On‐Insulator for On‐Chip Photonic Integration

Advanced Optical Materials, Volume 14, Issue 27, 17 July 2026.
ABSTRACT Color centers in silicon have great potential as single photon sources for quantum technologies. Some of them – like the T center – also possess optically‐active spins that enable spin‐photon interfaces for generating entangled photons and multi‐spin registers. This paper explores the generation of several types of color centers in silicon for
Arnulf J. Snedker‐Nielsen, David R. Gongora, Magnus L. Madsen, Christian H. Christiansen, Eike L. Piehorsch, Mathias Ø. Augustesen, Elvedin Memisevic, Sangeeth Kallatt, Rodrigo A. Thomas, Mark K. Svendsen, James L. Webb, Peter K. Jeppesen, Marianne E. Bathen, Lasse Vines, Peter Granum, Stefano Paesani   +15 more
wiley   +1 more source

When Cubic is Not Isotropic: Phonon–Exciton Decoupling in CuInSnS4 Single Crystals

Advanced Optical Materials, Volume 14, Issue 26, 10 July 2026.
A cubic CuInSnS4 crystal does not fully play by cubic rules. While phonons follow the average iso‐tropic lattice symmetry, the disorder‐localized excitons break away, showing strong, and reproduci‐ble polarization‐dependent emission. This work shows how intrinsic cation disorder can turn a mac‐roscopically cubic material into a source of hidden ...
Lara Kim Linke, Yvonne Tomm, Xinyun Liu, Galina Gurieva, Daniel M. Többens, Pardis Adams, Michel Calame, Ryan W. Crisp, Jessica Boland, Seán Kavanagh, Susan Schorr, Mirjana Dimitrievska   +11 more
wiley   +1 more source

Noncoherent Frequency-Shift Keying for Ambient Backscatter Over OFDM Signals

IEEE Open Journal of the Communications Society
In this paper, we investigate frequency shift keying (FSK) over ambient orthogonal frequency division multiplexed (OFDM) signals. By cycling through a sequence of antenna loads providing different phase shifts at the tag, we are able to unidirectionally ...
Mohamed A. ElMossallamy, Miao Pan, Riku Jantti, Karim G. Seddik, Geoffrey Ye Li, Zhu Han   +5 more
doaj   +1 more source